Applying laser Doppler anemometry inside a Taylor-Couette geometry using a ray-tracer to correct for curvature effects

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Abstract

In the present work it will be shown how the curvature of the outer cylinder affects laser Doppler anemometry measurements inside a Taylor¿Couette apparatus. The measurement position and the measured velocity are altered by curved surfaces. Conventional methods for curvature correction are not applicable to our setup, and it will be shown how a ray-tracer can be used to solve this complication. By using a ray-tracer the focal position can be calculated, and the velocity can be corrected. The results of the ray-tracer are verified by measuring an a priori known velocity field, and after applying refractive corrections good agreement with theoretical predictions are found. The methods described in this paper are applied to measure the azimuthal velocity profiles in high Reynolds number Taylor¿Couette flow for the case of outer cylinder rotation.
Original languageEnglish
Pages (from-to)115-119
JournalEuropean journal of mechanics. B, Fluids
Volume36
DOIs
Publication statusPublished - 2012

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Doppler
velocity measurement
tracers
Half line
rays
Curvature
curvature
Laser
velocity distribution
geometry
Taylor-Couette Flow
lasers
Curved Surface
curved surfaces
high Reynolds number
Velocity Profile
Complications
Velocity Field
Reynolds number
Prediction

Keywords

  • METIS-288417
  • IR-81794

Cite this

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title = "Applying laser Doppler anemometry inside a Taylor-Couette geometry using a ray-tracer to correct for curvature effects",
abstract = "In the present work it will be shown how the curvature of the outer cylinder affects laser Doppler anemometry measurements inside a Taylor¿Couette apparatus. The measurement position and the measured velocity are altered by curved surfaces. Conventional methods for curvature correction are not applicable to our setup, and it will be shown how a ray-tracer can be used to solve this complication. By using a ray-tracer the focal position can be calculated, and the velocity can be corrected. The results of the ray-tracer are verified by measuring an a priori known velocity field, and after applying refractive corrections good agreement with theoretical predictions are found. The methods described in this paper are applied to measure the azimuthal velocity profiles in high Reynolds number Taylor¿Couette flow for the case of outer cylinder rotation.",
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author = "Huisman, {Sander Gerard} and {van Gils}, {Dennis Paulus Maria} and Chao Sun",
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language = "English",
volume = "36",
pages = "115--119",
journal = "European journal of mechanics. B, Fluids",
issn = "0997-7546",
publisher = "Elsevier",

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TY - JOUR

T1 - Applying laser Doppler anemometry inside a Taylor-Couette geometry using a ray-tracer to correct for curvature effects

AU - Huisman, Sander Gerard

AU - van Gils, Dennis Paulus Maria

AU - Sun, Chao

PY - 2012

Y1 - 2012

N2 - In the present work it will be shown how the curvature of the outer cylinder affects laser Doppler anemometry measurements inside a Taylor¿Couette apparatus. The measurement position and the measured velocity are altered by curved surfaces. Conventional methods for curvature correction are not applicable to our setup, and it will be shown how a ray-tracer can be used to solve this complication. By using a ray-tracer the focal position can be calculated, and the velocity can be corrected. The results of the ray-tracer are verified by measuring an a priori known velocity field, and after applying refractive corrections good agreement with theoretical predictions are found. The methods described in this paper are applied to measure the azimuthal velocity profiles in high Reynolds number Taylor¿Couette flow for the case of outer cylinder rotation.

AB - In the present work it will be shown how the curvature of the outer cylinder affects laser Doppler anemometry measurements inside a Taylor¿Couette apparatus. The measurement position and the measured velocity are altered by curved surfaces. Conventional methods for curvature correction are not applicable to our setup, and it will be shown how a ray-tracer can be used to solve this complication. By using a ray-tracer the focal position can be calculated, and the velocity can be corrected. The results of the ray-tracer are verified by measuring an a priori known velocity field, and after applying refractive corrections good agreement with theoretical predictions are found. The methods described in this paper are applied to measure the azimuthal velocity profiles in high Reynolds number Taylor¿Couette flow for the case of outer cylinder rotation.

KW - METIS-288417

KW - IR-81794

U2 - 10.1016/j.euromechflu.2012.03.013

DO - 10.1016/j.euromechflu.2012.03.013

M3 - Article

VL - 36

SP - 115

EP - 119

JO - European journal of mechanics. B, Fluids

JF - European journal of mechanics. B, Fluids

SN - 0997-7546

ER -